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Texas Instruments TMUX2889 2:1 (SPDT) 2-Channel Switch

Texas Instruments TMUX2889 2:1 (SPDT) 2-Channel Switch is a complementary metal-oxide semiconductor (CMOS) multiplexer with two independently selectable 2:1, single-pole, double-throw (SPDT) switch channels. This device works with a single supply (1.6V to 5.5V) but can pass bidirectional analog and digital signals beyond the supply from -5.5V to 5.5V.

The TMUX2889 also features powered-off protection up to ±5.5V, which isolates the switch even when there is no supply voltage present (VDD = 0V). Without this protection feature, any voltage on the switch can back-power the supply rail through an internal ESD diode and cause potential damage to the rest of the system.

With 0.001% THD+N and 1mΩ RON-flatness, the Texas Instruments TMUX2889 is designed for passing precision analog and audio signals without adding distortion.

Features

  • Supply range of 1.8V to 5.5V
  • Beyond the supply signal range is -5.5V to 5.5V
  • > 1A (maximum) high current support
  • 0.2Ω ultra-low on-resistance
  • 1mΩ low on-resistance flatness
  • Low THD+N (0.001% (-100 dB))
  • –40°C to +125°C operating temperature
  • Powered-off protection
  • Over temperature protection
  • 1.8V logic compatible
  • Fail-safe logic
  • Break-before-make switching

Applications

  • Land mobile radios
  • Defense radios
  • Ultrasonic gas flow transmitters
  • Smart drug delivery
  • Analog input modules
  • Industrial module detection
  • RS485/232

Functional Block Diagram

Block Diagram - Texas Instruments TMUX2889 2:1 (SPDT) 2-Channel Switch
Published: 2023-11-03 | Updated: 2023-11-09